with In my experiences with good quality class D ampsThey just faithfully amplify the inputted signaout adding or subtracting anything. They’re like the audio amp ideal of a "straight wire with gain".
which I have proved couldn’t be further from the truth
In https://www.stereophile.com/images/archivesart/999A565fig2.jpg
Out https://cdn.stereophile.com/images/1212AM1fig02.jpg
I have a feeling there’s another new Class-D coming.